Journalist Lee Randall talks to Exhibition Officer Maureen Barrie, the driving force behind Catherine the Great: An Enlightened Empress, about Catherine's origins as an obscure German princess, her rise to power and her life and lovers as Empress of all the Russias. Presented in partnership with the State Hermitage Museum in St Petersburg, this unique exhibition is showing only at National Museum of Scotland, from 13 July - 21 October 2012. To find out more, visit www.nms.ac.uk/catherine